Mathematics - 12 December 2007

2007-12-12 11:10:54 · 4 answers · asked by Ichabod 1

please show your work so i can fully understand. solve for x

2007-12-12 11:10:48 · 2 answers · asked by Zack A 1

2007-12-12 11:06:03 · 4 answers · asked by Ichabod 1

1. At 11 AM, a boat leaves St. Augustine for Miami, 400 miles away, traveling at 40 mph. One hour later, a boat leaves Miami for St. Augustine at 50 mph. At what time do both boats pass each other?


2. A bus leaves school traveling at an average rate of 40 mph. A second bus leaves the school 1/2 an hour later following the same route. The second bus travels at an average rate of 60 mph. How long will it take the second bus to catch up with the first



step by step would be amazing

best answer gets 10 points.

2007-12-12 11:05:45 · 2 answers · asked by allie 3

2007-12-12 11:03:22 · 1 answers · asked by anand a 1

I'm taking Geometry, and I probably learned this in Algebra, but I forget how to solve a two-variable equation!
Such as:
5x-1=3y
or
2y+1=2x+3
Please explain, don't just do the problem, because I have many more problems to do on my own!

2007-12-12 10:59:20 · 6 answers · asked by Anonymous

2007-12-12 10:58:31 · 3 answers · asked by anand a 1

these were my problems that i finished

find three consecutive positive integers such that the square of the third is 51 more than the sum of the first and second

i got -X=25 but i dont see how thats right because X has to be positive but the number in this problem has to be positive too. if you do tell me the answer please show me the work and the check.

write an equation of the line whose slope is -2 and whose y intercept is -1

i got y= -2X+-1

thank you.

2007-12-12 10:57:50 · 2 answers · asked by Anonymous

The final exam worth 60% of my final grade, that is. The passing grade is 60%.

2007-12-12 10:43:49 · 3 answers · asked by Melissa 2

2007-12-12 10:42:34 · 10 answers · asked by Anonymous

2007-12-12 10:34:52 · 10 answers · asked by Anonymous

If so what is it in decimal form?? Thank you!!!

2007-12-12 10:30:30 · 6 answers · asked by Anonymous

Find the exact value of s in the given interval that has the given circular function value.

[pi, 3pi/2] ; tan s = 1

2007-12-12 10:27:27 · 1 answers · asked by Anonymous

2007-12-12 10:26:57 · 8 answers · asked by Anonymous

there are nine side dishes. mary wants three different sides. how many combinations can she make? how do you solve this is it "9!"?

also...mary wants 2 out of 9 sides and 1 out of 3 main dishes. how many combinations are possible?

2007-12-12 10:25:04 · 8 answers · asked by xpopxprincessx9x 2

a) 4(2x-3)
b)3a x 5a
C)5(3x+2)-5(2x-3)

2007-12-12 10:11:11 · 4 answers · asked by cheese freak 1

OK this is a problem on my homework i dont really get it. Oh yea and this is is 6th grade math yea....
Problem:
5.25-2 3/8

its a mixed number 2 as the whole number
And i have to borrow
I know this is my home work but i dont understand and i have my trumpet concert coming up soon. Please tell me step by step on how you do it thanks

2007-12-12 10:08:51 · 5 answers · asked by Anonymous

Chris is saving money for a ski trip. He has $62.50, but his goal is to save at least $100. What is the least amount Chris needs to save to reach his goal?

2007-12-12 10:01:55 · 11 answers · asked by Anonymous

1. (2x-4)(3x-5)=0

2. m(2m+7)(3m-4)=0

3. d^= 14d-45

4. h^= -3h+54

2007-12-12 10:01:21 · 2 answers · asked by Anonymous

2007-12-12 09:57:55 · 10 answers · asked by lalalaaa. 1

27^radical 5 x 9^ radical 5

I sort of know what to do but not sure. I know how to solve though.

2007-12-12 09:57:27 · 7 answers · asked by Ballerina 5

The sum of two whole numbers is 75. The difference is19. What are the numbers?

2007-12-12 09:56:12 · 10 answers · asked by ~SWEET~ 1

I did so horribly on the test and now I need to do the test corrections for practice & extra credit. Please do some of these step by step so I can learn how to do them. Thanks!!!

5) if log 5=a, then log 250 can be expressed as...(its not one...i picked that and got it wrong
1) 50a 2) 2a+1 3)10+ 2a 4) 25a

6) solve for X. (1/2)^x =8 (huh?)

8) (x+3)^3 - (x-1)^0 (now i know anything to the 0 is 1)

15) If x is a positive integer, 8(x^2/3) is equivalent to....(use radical form)

2007-12-12 09:53:38 · 2 answers · asked by ? 1

help me w/ gcf, greatest comen facter

2007-12-12 09:52:44 · 6 answers · asked by Anonymous

A street light is at the top of a 10 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 6 ft/sec along a straight path. How fast is the tip of her shadow moving when she is 40 ft from the base of the pole?

2007-12-12 09:52:41 · 1 answers · asked by Joe B 2

2007-12-12 09:51:12 · 2 answers · asked by Anonymous

2007-12-12 09:34:54 · 9 answers · asked by Anonymous

2007-12-12 09:31:09 · 10 answers · asked by IdontKnow1234 1

a horizontal force of 2N is just sufficient to prevent a block of mass 1kg from sliding down a rough plane inclined at arcsin 7/25 to the horizontal. Find the coefficient of friction between the block and the plane.
and the acceleration with which the block will move when the force is removed.
pleasse help ...

2007-12-12 09:25:36 · 1 answers · asked by rogla 3

I know that if all of the partial derivatives of f are continuous at a and exist in an open ball centered at a, then f is differentiable at a. But I was told differentiabilty can be ensured under less stringent conditions. Is this true? If so, can anyone give such condition, please?

2007-12-12 09:23:31 · 2 answers · asked by Anonymous